Improvement in drawing-frames



2 Sheets-Sheet 1.

H. O. GRAYSON. vDrawing Frame.

No. 211,903. Patented Feb. 4,1879.

N. PETERS, PHOTQ-UTHOGMPMER, WASHINGYONV D. I;

v 2 Sheets-Shah; 2. H. C. GRAYSON. Drawing Frame.

Patented N0. 211,903. Feb. 4,1879.

Ji 3. I

UNITED STATES PATENT.

anion HENRY O. GRAYSON, OF GENTREVILLE, RHODE ISLAND.

IMPROVEMENTIN DRAWING-FRAMES.

Specification forming part of Letters Patent No. 211,903, dated February4, 1879 application filed November 2, 1878.

To all whom it may concern:

Be it known that I, HENRY G. GRAYSON, of Oentreville, in the county ofKent and State of Rhode Island, have invented certain new and usefulImprovements inDrawin g-Fram es; and I do hereby declare that thefollowing specification, taken in connection with the drawings furnishedand forming a part thereof, is a clear, true, and complete descriptionof my said improvements.

As heretofore constructed, drawing-frames have embodied from two totwelve (and sometimes more) sets of drawing-rolls, each set be: ingprovided with a trumpet, and each trumpet being so connected withstopping mechanism, that the entire frame will be stopped in the eventof the undue movement of any one trumpeteither backward or forward,incident, respectively, to a lean, broken, or terminated sliver, and toa bunch therein.

Economy in space, as well as in first cost, renders it desirable toconsolidate in one frame as many sets of rolls as may be required or maybe practicable, and they are generally so consolidated, notwithstandingthe fact that in proportion to the number of sets there is an increasedloss in time and producing capacity incident to the frequent stopping ofthe entire frame when from any of the numerous wellknown causes thetrumpet of any one set of rolls operates the stop-motion. It is obviousthat this loss in producing capacity involves either a deficiency in thestock prepared for spinning, causing loss in time, of spindles, and soon, or a greater plant in drawingframes than would be actually necessaryfor supplying a given number of spindles if there was no loss in theproducing capacity of the frames.

The object of my invention is to increase the producing capacity ofdrawing-frames embodying two or more sets of rolls; and this object isattained by a novel organization of the rolls, their driving mechanism,and their stopping mechanism, whereby any one or more sets of rolls in aframe may be stopped for cause without in any manner affecting theoperation of other sets in the same frame, in connection with .which theoperative conditions are favorablefor the production of drawn slivers.

operated at a speed greater or less than any other set.

Without reference to other portions of my invention this sectionalfeature in a drawingframe haspractical value in that by the wellknownuse of change-gears any one frame may be made to do a variety ofdrawing, or one set of rolls may require repairs, which can be proceededwith regardless of the continued operation of the other sets, and undermany,

other circumstances a portion of the frame may be idle while theremainder is operated. A frame embodying this feature would necessarilyhave short top rolls at each set, as have heretofore been used; but,unlike all other drawing-frames, the fluted or bed rolls would be alsoof similar length instead of having them united to constitute aroller-shaft extending from end to end in the machine, as heretofore.

This novel organization of the rolls also involves the necessity ofemploying a separate pair of standards for each set of rollsand aseparate set of gearing for communicating with a driving-shaft common toall the sets, and also any suitable or well-known means fordisconnecting the driving-shaft from said gearing in each instance. Fullbenefits resulting from this portion of my invention are only availablewith the use of stopping mechanism capable of operating on one set ofrolls only; but it will be obvious that substantial advantages, asstated, will accrue, even if, as heretofore, the entire framebe stoppedthrough the action of a single trumpet, because immediately thereafterthe disconnection by hand of the delinquent set of rolls from the maindriving-shaft, as with a clutch, and the securing of their trumpet in acentral position, will permit the prompt resumption of work with all theother set of rolls, which need not be again stopped when the idle rollsare next ready for service, the connection with the driving-shaft ofthese latter being as readily executed as their disconnection.

Another feature of my invention consists in the combination, in adrawing-frame, of two or more separate sets of drawing rolls separate] ygeared to their drivin g-sh aft, and a stop ping mechanism to each set,which controls its gearing without interfering with the operation of anyother set of rolls.

Any suitable stop-motion mechanism may be employed in this combination,as nothing more is required of it than is required of any otherdrawing-frame stop-motion, except that, instead of operating upon thebelt-shipper and stopping the entire frame, I rely on it for stoppingonly the set of rolls with which it co-operates, and therefore itdisconnects the gearing of its particular set of rolls from thedriving-shaft, which is common to all the sets, instead of stopping theentire frame, as heretofore.

My invention further consists in the combination, with a set ofdrawing-rolls, of a main driving-shaft geared to said rolls byclutchgearing, a revolving stop-wheel shaft provided with a cam foroperating the clutch gearing, and a trumpet and its lever for engagingwith the stop-wheel, whereby the rolls may be stopped independently ofthe main shaft.

In order that the rotation of each can for receiving the sliver may beterminated with the stoppage of its particular set of rolls, myinvention further consists in the combination, with a set of rolls whichare capable of being stopped independently of the main shaft, of anauxiliary shaft, which revolves and stops simultaneously with the rollsfor rotating the front can.

WVhen combined with stop -motions which control a single set of rolls ina frame, the auxiliary shaft, in the combination last stated, ispreferably made to perform also the function of a stop-wheel shaft; butwhen the stopmotions operate to stop the entire frame, as set forth inconnection with the first-stated portion of my invention, I can utilizethe front roll of a section of rolls and make it operate as and performthe function of the auxiliary shaft for revolving the can for that setof rolls, a band being used in either case. The can may, however, berevolved by being banded to any other revolving portion of the framewhich has a movement corresponding with that of the rolls, and stopstherewith, in which case said portion would constitute in its functionand operation an auxiliary shaft, as stated in this combination. Thevalue of this portion of my invention will be obvious, because if thestop-motion operates by reason of a weak or lean sliver the can willcease to revolve, and thereby prevent the sliver between theconducting-rolls and the can from being unduly twisted.

To more particularly describe my invention, I will refer to thedrawings, of which there are two sheets.

Figure 1, Sheet 1, represents, in front elevation, a drawing-frameembodying one and portions of two other sets of drawing-rollsconstructed in accordance with my invention. Fig. 2, Sheet 1,represents, in end view, the gearing of a set of rolls, and also, insection, the roller-beam and main shaft adjacent thereto. Fig. 3, Sheet2, represents, in plan or top view, one set of rolls at the end of theframe. Fig. 4, Sheet 2, represents Fig. 3 in rear elevation. Fig. 5,Sheet 2, represents, in perspective, a portion of the main shaft and itsclutch-gear, the auxiliary or stop-wheel shaft, its clutch and gear, andthe trumpet with its lever, these parts being detached and in positionwith relation to each other as if mounted in the machine. Fig.6, Sheet2, is a sectional view of the clutch-gear on main shaft.

The frame of the machine contains the usual roller-beam a, legs b, andlongitudinal central brace, 0, below the beam. The three sets of rollsA, B, and B are wholly independent of each other, each set being whollymounted in its own standards d, secured to the top of the roller-beam. Amain shaft, 0, extends beneath all the sets of rolls from end to end ofthe frame, and is provided with driving and loose pulleys.

Each set of rolls is driven byits own gearing, as illustrated in Fig. 2.The central fluted or bed roll, receiving power through its gear 6,transmits it by lazy-gears to the fluted rolls on either side. A largegear, f, mounted on a vertically-adjustable stud, connects the rollgear0 with the main shaft, and it also, by means of a chain of gearing,imparts motion to the gear g on the conducting or rolls.

Themain shaft 0, beneath each large gear f, has a sliding gear, h,provided with an internally-grooved hub, which, whenengaged with thespline t' on the main shaft, causes it to revolve with said shaft, butto stand loose thereon when moved beyond the end of its spline. of therolls in each section may be varied-by the use of changegears.

Each section or set of rolls involves the use of a separate stop-wheelshaft or its equivalent, by which the disconnection of the gearing fromthe mcin shaft is effected. I am well aware that all of the requiredeffects may be attained by a hollow shaft or sleeve mounted on the mainshaft, carrying the stop-wheel, and provided with cams and clutchmechanism in a manner obviously applied but I have employed a solidshaft, 1), mounted in hangers parallel with and in rear of the mainshaft. This shaft D has the usual stop-wheel k secured thereon, and ithas also at the end adjacent to the roll-gearing a sliding gear, Z, thehub of which, at one end, is cam-shaped for cooperation with acorresponding cam-faced collar, m, which is secured to the stop-wheelshaft. The sliding gear 1 engages with the sliding gear h on the'mainshaft 0, and these two sliding gears are connected to each otherdelivery In a manner well known, the speed by a yoke, 12, so that theirsliding movements on their respective shafts are simultaneous.

It will be seen, when the stop-wheel shaft is stopped by thetrumpet-levers, that, the cam on collar on being stationary with itsshaft, the continued revolution of the gear I will cause the latter tomove longitudinally on its shaft, and carry with it, by reason of theyoke, the gear h on the main shaft to a point beyond its spline i, andfrom that moment that gear and the rolls driven by it will cease torevolve. V

The trumpet E and its two-armed lever 0 is of a well-known character,and the stop-wheel k is engaged thereby, as heretofore.

Other forms of trumpet-levers and stopwheels may be employed .withoutdeparting from my invention, because no operative function is requiredin the trumpet, levers, and stopwheel which is not required in the sameparts as heretofore used for stopping the entire frame.

The stop-motion may also be so constructed as to operate promptly when aback can is exhausted, as with what are known as back stop-motions,without in any manner affecting my invention.

The yoke a, which unites the two sliding gears h and l, is provided witha hand-lever, p, by which they may be returned to their operativcpositions after having been thrown out of gear by the stoppage of thestop-wheel shaft.

It will be seen that the stop-wheel shaft is revolved by the friction ofcoincident surfaces of the cam at m, and this, under ordinarycircumstances, affords sufficientpower for rotating the front can, intowhich the sliver is. delivered from the frame.

It will be seen, however, that, if desirable, the frictional contact ofthe cam-surfaces may be increased to any required degree by theemployment of a spring which will force them toward each other, and yetyield when the stop-wheel shaft ceases to revolve.

The can-pulley r is secured to the stopwheel shaft at a point from whichit may be conveniently banded for rotating the can, and the movement ofthe can therefore ceases with the rotation of the set of rolls fromwhich it receives the sliver. v

It will be seen that, if the can should continue to revolve after thestoppage of its rolls on a weak sliver, or when the back stop-motion hasoperated because of a terminal end or break from a back can, the sliverbelow the delivery-rolls would be unduly twisted,

and result in lack of uniformity in the subsequent drawing operations.

The stop-wheel shaft is auxiliary to the main shaft, and any otherrevolving member in any section of the frame which revolves and stopswith the rolls of that set or section will perform the same function asa candriver, and be auxiliary to the main shaft in the sense hereinintended. a

In operation, it will be seen, if, for any of the well-known reasons toonumerous to mention, any one of the sections of rolls is stopped, thatall of the others will continue to operate, and that, after stoppage,said section may be put into operation while the others are at work.

The loss of time due to the necessary stoppage of each section of rollsis very considerable, varying, of course, in difl'erent mills, andwhatever this loss may be it must be substantially increased in eachframe, as heretofore constructed, in proportion to the number of sets ofrolls in the frame; but by reason of my invention no loss of time orproduction is possible, except from the stoppage of individual sections.

It is obvious that the fluted rollers may be composed of fluted shellsand solid shafts, the two being rotatively connected and disconnected bymeans of asplined clutch, as shown at q, Fig. 1, and that in such casesaid solid shafts could be extended from one end of the frame to theother and driven as heretofore; but the sectional feature would stillexist, and the results before set forth be approximately attainedwithout departing from the true spirit of my invention.

Having thus described my invention,I claim as new and desire to secureby Letters Patentl. The combination, in a drawing-frame, of two or moresets of drawing-rolls, constructed in independent sections, and providedwith separate driving-gearing, substantially as described, whereby anyone set of rolls may be stopped independently of any other set, oroperated at a speed greater or less than the others, as set forth.

2. The combination, in a drawing-frame, of two or more sets ofdrawing-rolls, constructed in independent sections, and provided withseparate driving-gearing, of a stoppingmechanism to each section, whichcontrols its driving-gearing independently of any other section,substantially as described.

3. The combination, with a set of drawingrolls, of a main driving-shaft,clutch geared to the rolls, a revolving stop-wheel shaft for operatin gthe clutch-gearin g, and a trumpet with its lever, for engaging with thestop-wheel, substantially as described.

4. The combination, with a set of drawingrolls, which are capable ofstopping independently of their driving-shaft, of an auxiliary shaft,which revolves and stops simultaneously with the rolls, substantially asdescribed, whereby a front can may be rotated from the auxiliary shaftonly when the rolls are en gaged in drawing, as set forth.

HENRY G. GRAYSON.

Witnesses:

PHILIP A. SWEET, 2d, 7 FRANK N. BABGOCK.

